Update to xalloc.

1 files changed, 1 insertions, 1 deletions

diff --git a/xalloc.h b/xalloc.h
index 0d169cf9..5ee45164 100644
--- a/xalloc.h
+++ b/xalloc.h
@@ -156,7 +156,7 @@ void *
 xrealloc(void *p, size_t size)
 {
    void *new_p = realloc(p, size);
-   if (new_p ==  0)
+   if (!new_p && size)
      xalloc_die ();
 
    return new_p;